Electromagnetic Spectrum:the range of wavelengths or frequencies over which electromagnetic radiation extends
Flash Memory:memory that retains data in the absence of a power supply
Image Sensor:a device that converts an optical image to an electric signal
Aperture:a space through which light passes in an optical or photographic instrument, esp. the variable opening by which light enters a camera
Shutter:each of a pair of hinged panels fixed inside or outside a window that can be closed for security or privacy or to keep out light
Exposure:the state of being exposed to contact with something
Depth of field:the distance between the nearest and the furthest objects that give an image judged to be in focus in a camera
F-stop:the ratio of focal length to the effective diameter of a lens; also called f-number, it represents how much light is able to pass through the lens
Focal Length:the distance between the center of a lens or curved mirror and its focus
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